CODEWITHSUNDEEP
jspguice
Ashwin Menkudle
Ashwin Menkudle

Reputation: 11

how to acess guice session scope in jsp using el

I am new to guice DI Framework In Spring we can access the session scope variable using el

sessionScope['scopedTarget.sessionService'].loggedUser

But how can I do this in guice?

Upvotes: 0

Views: 269

Answers (1)

Jeff Bowman
Jeff Bowman

Reputation: 95634

If you choose to use Guice's Servlet extension, you should be able to bind an HttpSession or Provider<HttpSession> automatically.

In your class, you would put something like this:

private final MyDependency dependency;
private final Provider<HttpSession> sessionProvider;

@Inject
public MyClass(MyDependency dependency, Provider<HttpSession> sessionProvider) {
  this.dependency = dependency;
  this.sessionProvider = sessionProvider;
}

void callMyService() {
  HttpSession session = sessionProvider.get();
  String myValue = (String) session.get("value");
  // ...
}

Providers are built-in interfaces that let you get fresh instances from the injector. If class Foo is bound, you can always inject Provider<Foo> without any additional work. Here, injecting a Provider is a good idea, because the class you're writing may live longer than any given session.

Upvotes: 1

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